Where do I find uplink data sent by my nodes

ChirpStack Application Server
1

I’ve got LoRaServer all set up and receiving data from nodes. Now I want to use the data from the nodes to create a graph on a webpage.

The problem is that I can’t find the data!

Is it stored in the database?
Do I need to build an application to pull the data out and store it in a separate database?
Is there a tutorial on how to interact with the data that’s been received?

Thanks.

2

Another thought. Can I get the LoRaSevrer to call an external URL whenever new data is received?

3

Please see:

1 Like
4

Thanks Brocaar.

I think i’m making some headway.

I’ve set up a HTTP integration and set the endpoints to a script on my server (http://example.com/testdata.php) but i’m not seeing any calls from the loraserver. Is there something else I should be doing to get it working?

Thanks.

5

So, the reason the URL call is not being made is because the Frame Log is not getting updated. It looks like everything was working fine until the 3rd October when I stopped seeing new entries in the Frame Log for this node.

I checked the loraserver log and see this when a message is received:

Oct 05 16:15:42 lorawan loraserver[3560]: time="2017-10-05T16:15:42Z" level=info msg="backend/gateway: rx packet received"
Oct 05 16:15:42 lorawan loraserver[3560]: time="2017-10-05T16:15:42Z" level=error msg="processing rx packet error: get node-session error: node-session does not exist or invalid fcnt or mic" data_base64="QLIcASaAAAABAHzYB1htBhlUINJR5//mIlIys1U7qd1OOfUgxG4="

Nothing has changed in the config so is there any reason why a node would suddenly stop working?

6

Slowly working this out! Please stick with me!

I remembered that I replaced the batteries in the node so the frame counter was out and was rejecting the messages. I reset the frame counter to 0 and it’s now showing the messages in the frame log again. Still no URL call though.